Not your fault OP, and it's a good price if you want one. But had one and took it back. Utterly unusable for fighting games. Was gutted.
Common faults I've seen for this are sync issues and the D-pad being stiff and not registering diagonals as Rosebeaver mentions. I came across one vid and amazon review that mentioned opening it up and re-seating the d-pad improved it a lot. Seems like a bit of a gamble, as some people don't have these problems. Shame as it looks really nice.
These controllers are awful. You can't go diagonal on the d-pad. Ridiculous design flaw.
Why is it not compatible with the Switch ?
Have these been updated since the original release? It’s a good price, so well done op, but a horrible product that’s really not for fighting games. Shame really